The Johnson Controls P170EA-14 is a professional-grade low pressure controller designed for precise pump-down control and low-pressure cut-out in commercial refrigeration and HVAC systems. Engineered with a NEMA 1 enclosure, this unit offers a functional range from 12" W.C. to 80 psi, making it a versatile choice for monitoring low-side system pressures. One of the standout features for technicians is the adjustable differential, which can be tuned between 5 psi and 35 psi. This flexibility allows for fine-tuning the refrigeration pressure switch to meet specific compressor cycling requirements, preventing short-cycling and ensuring optimal system performance. This Johnson Controls P170 series model features SPDT switch action and a 1/4-inch external flare connection for straightforward integration into existing lines. The Sight-Set calibrated pressure adjustment scale allows for quick visual verification of settings without removing the cover, streamlining the commissioning process for contractors. Built with an all-steel case, the P170EA-14 is compatible with all non-corrosive refrigerants, providing a rugged and reliable solution for cooling and air conditioning applications where accurate pressure regulation is critical. Key Benefits Precise Pressure Regulation: High-accuracy monitoring from 12" W.C. up to 80 psi for demanding commercial HVAC maintenance. Field-Adjustable Differential: Features a 5 to 35 psi adjustable range to accommodate various low pressure cut-out setpoints. Durable Construction: Heavy-duty all-steel case and cover provide superior protection in mechanical room environments. Universal Compatibility: Designed for use with most common non-corrosive refrigerants and air/water applications. Simplified Setup: The Sight-Set scale enables technicians to view and adjust settings rapidly during installation. Common Questions What type of switch action does the P170EA-14 use? This model utilizes a Single-Pole Double-Throw (SPDT) switch, allowing it to open or close a circuit on pressure rise or fall, providing flexibility for both control and alarm functions. Is this controller compatible with ammonia systems? The P170EA-14 is specifically designed for non-corrosive refrigerants. For ammonia-based applications, a dedicated ammonia-compatible model from the Johnson Controls/PENN line should be used. Can the differential be adjusted while the system is live? Yes, the adjustable differential allows for real-time calibration to reach the desired cut-in and cut-out points, though technicians should always follow standard safety protocols when working around pressurized lines and electrical components. This item is not eligible for free shipping. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
